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glow plug relay?

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Old Feb 26, 2012 | 07:33 PM
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glow plug relay?
I have a new gp selenoid/relay but I am not getting any signal to it when I turn the key on. Any ideas?
 
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Old Feb 26, 2012 | 07:40 PM
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You should have one big post hot always,the other big hot with key on, one small hot when key on and the other small is a ground signal from the PCM.
 
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Old Feb 26, 2012 | 07:53 PM
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Ok I have power on the single big lug. I will check both small lugs. If I do have power on one of the small lugs then it is the ground lug right.
 
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Old Feb 26, 2012 | 07:56 PM
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Are you checking this on a cold engine? If not wait till it cools down as the PCM may not turn on the gpr if the EOT is above 140*
 
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Old Feb 26, 2012 | 08:17 PM
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Yea it was below 40 degrees. The WTS light comes on but there is no signal to the relay. I jumped the relay and it will start when cold.
 
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Old Feb 26, 2012 | 08:45 PM
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Do you have one small wire getting hot with key on?
 
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Old Feb 26, 2012 | 08:51 PM
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Do you have a stancor?
 
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Old Feb 26, 2012 | 08:57 PM
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I am not sure if I have power to a little wire but I am going to. If I do what should I look for?
 
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Old Feb 26, 2012 | 09:01 PM
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If you have 12v to one small wire then the other small wire (ground) has a break in it. If no 12v then you have a break in it. The small key on hot comes from fuse #22
 
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Old Feb 26, 2012 | 09:09 PM
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Ok thanks I will check 22 and go from there. Thanks guys this site is a great resource!
 
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Old Feb 26, 2012 | 09:19 PM
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If you have a WTS light then fuse 22 is good. I was just sayin the wire starts at that fuse and runs to the gpr
 
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Old Feb 26, 2012 | 09:58 PM
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Oh alright ill check out the engine harness and what not and ill let ya know.
 
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Old Feb 26, 2012 | 10:04 PM
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Use this
Welcome to guzzle's Stancor GPR replacement Mod Web Page
 
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Old Feb 27, 2012 | 04:10 PM
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Alright i checked for power on the little wires and neither had any. I can see the harness wires under the air box are all visibly not protected by the the black wrinkle tubing. I am going to pull air box and probably throw it away in the process and inspect harness. I despise the factory air box!
 
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Old Feb 27, 2012 | 05:14 PM
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Indeed the stock airbox is cr@p. But do you have something else lined up to replace it, such as a 6637 or other "big barrel" filter?

Lack of power at the red/green small wire is at the crux of your problem. Just so we're on the same page, you did check it with the key in RUN, correct? If so, and if you indeed have the WTS light, then the problem is most likely a break in that wire, somewhere between the GP relay and the PCM.
 
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